PBS is a retrievable axial-type mechanical packer, which is weight-set by the tubing.
The direction of pressure perceived by the packer is from below. The packer is transferred from the tripping state to the landing state by means of axial manipulations of the tubing.
For setting, it is necessary to raise the tubing to a height of at least 24 inches and then unload it with a weight of at least 17 700 pounds. The release of the packer is carried out by direct lifting of the tubing.

• Well Operation
• Pressure testing of wells, equipment and search for leaks
• Workover, in particular cementing of wells, acid treatment of the bottomhole zone and others

• Simplicity and reliability of design
• Setting by axial manipulation of the tubing
• Unlimited number of setting per tripping
• Full bore
• Serviceability